Example usage for java.net URLClassLoader getResourceAsStream

Introduction

In this page you can find the example usage for java.net URLClassLoader getResourceAsStream.

Prototype

public InputStream getResourceAsStream(String name) 

Source Link

Document

Returns an input stream for reading the specified resource.

Usage

From source file:com.katsu.dwm.reflection.JarUtils.java

/**
 * Return as stream a resource in a jar/*from   ww  w .  ja v  a 2s . c om*/
 * @param jar
 * @param resource 
 */
public static InputStream getResourceAsStream(File jar, String resource) {
    try {
        URLClassLoader urlClassLoader = new URLClassLoader(new URL[] { jar.toURI().toURL() }, null);
        return urlClassLoader.getResourceAsStream(resource);
    } catch (Exception e) {
        logger.error(e);
    }
    return null;
}

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From source file:io.fabric8.forge.ipaas.repository.NexusConnectionRepository.java

private static String loadCamelConnectorJSonSchema(URL url) {
    try {/*from  w  ww.java2 s  . c o  m*/
        // is it a JAR file
        URLClassLoader child = new URLClassLoader(new URL[] { url });
        InputStream is = child.getResourceAsStream("camel-connector.json");
        if (is != null) {
            return loadText(is);
        }
        IOHelpers.close(is);
    } catch (Throwable e) {
        e.printStackTrace();
        // ignore
    }

    return null;
}

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From source file:edu.uci.ics.asterix.event.service.AsterixEventServiceUtil.java

private static void injectAsterixLogPropertyFile(String asterixInstanceDir, AsterixInstance asterixInstance)
        throws IOException, EventException {
    final String asterixJarPath = asterixJarPath(asterixInstance, asterixInstanceDir);
    File sourceJar1 = new File(asterixJarPath);
    Properties txnLogProperties = new Properties();
    URLClassLoader urlClassLoader = new URLClassLoader(new URL[] { sourceJar1.toURI().toURL() });
    InputStream in = urlClassLoader.getResourceAsStream(TXN_LOG_CONFIGURATION_FILE);
    if (in != null) {
        txnLogProperties.load(in);/*from   ww  w.j  ava2s .c o  m*/
    }

    writeAsterixLogConfigurationFile(asterixInstance, txnLogProperties);

    File sourceJar2 = new File(asterixJarPath);
    File replacementFile = new File(asterixInstanceDir + File.separator + "log.properties");
    replaceInJar(sourceJar2, TXN_LOG_CONFIGURATION_FILE, replacementFile);

    new File(asterixInstanceDir + File.separator + "log.properties").delete();
}

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From source file:io.fabric8.forge.camel.commands.project.AbstractCamelProjectCommand.java

public static Properties loadComponentProperties(Dependency dependency) {
    Properties answer = new Properties();

    try {/*from  w w  w  .j  a  va2  s .  c om*/
        // is it a JAR file
        File file = dependency.getArtifact().getUnderlyingResourceObject();
        if (file != null && file.getName().toLowerCase().endsWith(".jar")) {
            URL url = new URL("file:" + file.getAbsolutePath());
            URLClassLoader child = new URLClassLoader(new URL[] { url });

            InputStream is = child
                    .getResourceAsStream("META-INF/services/org/apache/camel/component.properties");
            if (is != null) {
                answer.load(is);
            }
        }
    } catch (Throwable e) {
        // ignore
    }

    return answer;
}

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From source file:io.fabric8.forge.camel.commands.project.AbstractCamelProjectCommand.java

public static String extractComponentJavaType(Dependency dependency, String scheme) {
    try {//from  www .j  av a  2 s  .c o m
        // is it a JAR file
        File file = dependency.getArtifact().getUnderlyingResourceObject();
        if (file != null && file.getName().toLowerCase().endsWith(".jar")) {
            URL url = new URL("file:" + file.getAbsolutePath());
            URLClassLoader child = new URLClassLoader(new URL[] { url });

            InputStream is = child
                    .getResourceAsStream("META-INF/services/org/apache/camel/component/" + scheme);
            if (is != null) {
                Properties props = new Properties();
                props.load(is);
                return (String) props.get("class");
            }
        }
    } catch (Throwable e) {
        // ignore
    }

    return null;
}

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From source file:io.fabric8.forge.camel.commands.project.AbstractCamelProjectCommand.java

public static String loadComponentJSonSchema(Dependency dependency, String scheme) {
    String answer = null;//from  ww  w  .java2 s. c o m

    String path = null;
    String javaType = extractComponentJavaType(dependency, scheme);
    if (javaType != null) {
        int pos = javaType.lastIndexOf(".");
        path = javaType.substring(0, pos);
        path = path.replace('.', '/');
        path = path + "/" + scheme + ".json";
    }

    if (path != null) {
        try {
            // is it a JAR file
            File file = dependency.getArtifact().getUnderlyingResourceObject();
            if (file != null && file.getName().toLowerCase().endsWith(".jar")) {
                URL url = new URL("file:" + file.getAbsolutePath());
                URLClassLoader child = new URLClassLoader(new URL[] { url });

                InputStream is = child.getResourceAsStream(path);
                if (is != null) {
                    answer = loadText(is);
                }
            }
        } catch (Throwable e) {
            // ignore
        }
    }

    return answer;
}

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From source file:com.wavemaker.commons.io.ResourceURLTest.java

@Test
public void shouldWorkViaClassLoader() throws Exception {
    Folder jail = this.root.getFolder("jail").jail();
    URLClassLoader classLoader = new URLClassLoader(new URL[] { ResourceURL.get(jail) });
    assertThat(IOUtils.toString(classLoader.getResourceAsStream("/a/b/c.txt")),
            Matchers.is(Matchers.equalTo("c")));
    assertThat(classLoader.getResource("/x/y/z.txt").toString(),
            Matchers.is(Matchers.equalTo("rfs:/x/y/z.txt")));
}

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From source file:com.varaneckas.hawkscope.plugin.PluginManager.java

private void processPlugin(final File pluginDir, final String jar) {
    try {//  ww  w .  java2 s .  co m
        final File jarFile = new File(pluginDir.getAbsolutePath() + "/" + jar);
        final URLClassLoader classLoader = new URLClassLoader(new URL[] { jarFile.toURI().toURL() });
        final Reader r = new InputStreamReader(classLoader.getResourceAsStream("plugin.loader"));
        String pluginClass = "";
        int c = 0;
        while ((c = r.read()) != -1) {
            pluginClass += (char) c;
        }
        r.close();
        log.debug("Processing Plugin: " + pluginClass);
        if (!isPluginEnabled(pluginClass)) {
            log.debug("Plugin disabled, skipping");
            getAllPlugins().add(new DisabledPlugin(pluginClass));
            return;
        }
        Class<?> p = classLoader.loadClass(pluginClass);
        Method creator = null;
        try {
            creator = p.getMethod("getInstance", new Class[] {});
        } catch (final NoSuchMethodException no) {
            log.debug("Plugin does not implement a singleton getter");
        }
        Plugin plugin;
        if (creator == null) {
            plugin = (Plugin) p.newInstance();
        } else {
            plugin = (Plugin) creator.invoke(p, new Object[] {});
        }
        creator = null;
        p = null;
        if (plugin != null) {
            log.debug("Adding plugin: " + plugin);
            getAllPlugins().add(plugin);
        }
    } catch (final Exception e) {
        log.warn("Failed loading plugin: " + jar, e);
    }
}

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From source file:mobac.mapsources.loader.MapPackManager.java

public void loadMapPack(File mapPackFile, MapSourcesManager mapSourcesManager)
        throws CertificateException, IOException, MapSourceCreateException {
    // testMapPack(mapPackFile);
    URLClassLoader urlCl;
    URL url = mapPackFile.toURI().toURL();
    urlCl = new MapPackClassLoader(url, ClassLoader.getSystemClassLoader());
    InputStream manifestIn = urlCl.getResourceAsStream("META-INF/MANIFEST.MF");
    String rev = null;/*from  ww  w . j  av a2 s.c o m*/
    if (manifestIn != null) {
        Manifest mf = new Manifest(manifestIn);
        rev = mf.getMainAttributes().getValue("MapPackRevision");
        manifestIn.close();
        if (rev != null) {
            if ("exported".equals(rev)) {
                rev = ProgramInfo.getRevisionStr();
            } else {
                rev = Integer.toString(Utilities.parseSVNRevision(rev));
            }
        }
        mf = null;
    }
    MapSourceLoaderInfo loaderInfo = new MapSourceLoaderInfo(LoaderType.MAPPACK, mapPackFile, rev);
    final Iterator<MapSource> iterator = ServiceLoader.load(MapSource.class, urlCl).iterator();

    while (iterator.hasNext()) {
        try {
            MapSource ms = iterator.next();
            ms.setLoaderInfo(loaderInfo);
            mapSourcesManager.addMapSource(ms);
            log.trace("Loaded map source: " + ms.toString() + " (name: " + ms.getName() + ")");
        } catch (Error e) {
            urlCl = null;
            throw new MapSourceCreateException("Failed to load a map sources from map pack: "
                    + mapPackFile.getName() + " " + e.getMessage(), e);
        }
    }
}

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From source file:io.fabric8.ConnectorMojo.java

/**
 * Finds and embeds the Camel component JSon schema file
 *///from ww w  .j  av a 2s .c o m
private File embedCamelComponentSchema(File file) throws MojoExecutionException {
    try {
        List<String> json = loadFile(file);

        String scheme = extractScheme(json);
        String groupId = extractGroupId(json);
        String artifactId = extractArtifactId(json);
        String version = extractVersion(json); // version not in use

        // find the artifact on the classpath that has the Camel component this connector is using
        // then we want to grab its json schema file to embed in this JAR so we have all files together

        if (scheme != null && groupId != null && artifactId != null) {
            for (Artifact artifact : getProject().getDependencyArtifacts()) {
                if ("jar".equals(artifact.getType())) {
                    if (groupId.equals(artifact.getGroupId()) && artifactId.equals(artifact.getArtifactId())) {
                        // load the component file inside the file
                        URL url = new URL("file:" + artifact.getFile());
                        URLClassLoader child = new URLClassLoader(new URL[] { url },
                                this.getClass().getClassLoader());

                        InputStream is = child
                                .getResourceAsStream("META-INF/services/org/apache/camel/component/" + scheme);
                        if (is != null) {
                            List<String> lines = loadFile(is);
                            String fqn = extractClass(lines);
                            is.close();

                            // only keep package
                            String pck = fqn.substring(0, fqn.lastIndexOf("."));
                            String name = pck.replace(".", "/") + "/" + scheme + ".json";

                            is = child.getResourceAsStream(name);
                            if (is != null) {
                                List<String> schema = loadFile(is);
                                is.close();

                                // write schema to file
                                File out = new File(classesDirectory, "camel-component-schema.json");
                                FileOutputStream fos = new FileOutputStream(out, false);
                                for (String line : schema) {
                                    fos.write(line.getBytes());
                                    fos.write("\n".getBytes());
                                }
                                fos.close();

                                getLog().info("Embedded camel-component-schema.json file for Camel component "
                                        + scheme);

                                return out;
                            }
                        }
                    }
                }
            }
        }

    } catch (Exception e) {
        throw new MojoExecutionException("Cannot read file camel-connector.json", e);
    }

    return null;
}

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